Bumping some versions

ihaskell.cabal

@@ -95,7 +95,7 @@ library
                        utf8-string          -any,
                        uuid                 >=1.3,
                        vector               -any,
-                       ipython-kernel       >=0.3
+                       ipython-kernel       >=0.4
   if flag(binPkgDb)
     build-depends:       bin-package-db
 

ipython-kernel/ipython-kernel.cabal

 name:                ipython-kernel
-version:             0.3.0.0
+version:             0.4.0.0
 synopsis:            A library for creating kernels for IPython frontends
 
 description:         ipython-kernel is a library for communicating with frontends for the interactive IPython framework. It is used extensively in IHaskell, the interactive Haskell environment.